Cushion-valve.



E. V. IANDERSON.

CUSHION VALVE.

LPP LIOATION FILED IfEB. 1,,1911.

Patentd' Nov. 4, 1913.

UNITED srA Es PATENT onnrcn f f EDWARD v. mnason, or monnsson, PENNSYLVKNIA, nssrenoa or ONE-HAL! 'ro CHARLES E. 'GOLDEN, or cannon, PENNSYLVANIA:

cusnrou-venvn.

To all 'whom it may concern Be it known that I, EDWARD Mones son, in the State of Pennsylvania, have invented certain new and useful Improvements in Cushion-Valves, of which the following is a specification.

My invention relates to the general class of non-return or stop-valves and particularly to valves having means to cushion the action to prevent sudden and violent motions, especially in the operation of closing.

I have illustrated the invention in the acpompanying drawing in which? Figure 1 is a longitudinal section of: a casing containing a preferred form of the valve and Fig. 2 is a side elevation and partial section. i

These figures show a casing 9 with a vertically arranged valve seat 10 and a disk valve '11 pivoted on a trunnion 12 by means I of a rigidly attached arm l8. The cap 14: is

for easy insertion of the valve. On the side of the casing 9 is a box 15 through which ex-- tends the trunnion 12, carrying rigidly thereon a cushioning wing 16,- which closelyfits the sector shaped boxing 15. The box 15 is I filledwith a fluidandin any motion of the valve 11, the vane 16 moves corres ondingly and the action is therefore cus ioned inv either opemng 0r shutting. Thewane 16 is so arranged asto come into-contact with its limiting wall at the same time that the valve disk 11 reaches its limiting position, whereby to entrap the fluid and render the final motion of the valve necessarily slow as the fluid leaks ,under the wing 16. By reason of leak-r Specification of Letters Patent. Application filedTebruary 1, 1am. Serial at. 503,058. I

I V. ANDERIsoN, a citizen of the United States, residing at age along the opening passes through the si e of cas' 9, the pressure of fluid in the box 15 remains normally the same as that of the fluidin the casing.

Patente dNov. 4=,.1913.

by which the shaft 12 n Thus the valve is. caused to both, open and close. slowly, but without any permanent res sistance to its remaining open. Water hammer or suddenglosing is-entirely prevented,

and in both cases the closing motion meets I with anincreasing retarding resistance as the valve approaches its seat.

Other advantages of the device will readily occur to those familiar with the art.

Having thus described my invention, and illustrated its use, what I claim is the followmg: I

1. A direct seating valve having means to cushion its approach to its seat and also its opening movement said cushioning means being designed to inte'rpose increasingresistf ance as'the valve approaches its limiting position. a

2. The combination with a-valve casing and a valve therein, of a supplementary closed compartment on the casing, and a re- .tarding vane located in said compartment and rigidly mounted on the same shaft with the valve, whereby to prevent sudden closing of the valve,.substantiall as described.

' In testimony .whereo 1 have hereunto signed my name in the presence ofthe subscribed-witnesses. I I (I I EDWARD V. ANDER$ON.

Witnesses:

FBEDK. STAUB Cms. S. L ar am. 

